Borosilicate Glass Separatory Funnels
Manufacturer: United Scientific
The Borosilicate Glass Separatory Funnels from United Scientific are indispensable for chemistry laboratories performing extractions and phase separations. These funnels feature the classic pear-shaped (Squibb) design, which is specifically engineered to provide a large surface area for mixing and a narrow bottom for the precise separation of immiscible liquids. Each unit is constructed from high-quality borosilicate glass, offering superior clarity for monitoring phase interfaces and exceptional resistance to chemical corrosion. To ensure a modern, maintenance-free workflow, these funnels come equipped with a PTFE (Teflon) stopcock, allowing for smooth, grease-free operation that prevents sample contamination.
Description
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Choose United Scientific Borosilicate Glass Separatory Funnels – the precise, durable, and reliable solution for all your liquid separation needs!
Features:
- Grease-Free Operation: The PTFE stopcock does not require joint grease, which is critical for preventing the contamination of organic extracts and ensuring the valve never "freezes" during use.
- Exceptional Clarity: Precision-molded glass allows for a crisp, clear view of the meniscus, enabling the user to stop the flow exactly at the interface of the two phases.
- Secure Sealing: The included plastic stopper provides an airtight fit for vigorous shaking during extraction, while the PTFE valve ensures no leaking from the bottom.
- High Chemical Resistance: Safely handles a wide variety of aggressive solvents, acids, and bases used in typical organic synthesis and environmental testing.
Extraction Best Practices:
- Pressure Venting: During extraction, especially when using volatile solvents like ether or dichloromethane, always invert the funnel and open the stopcock frequently to vent built-up gas pressure.
- Storage: After cleaning, store the funnel with the PTFE stopcock slightly loosened. This prevents the PTFE from deforming over time and ensures a perfect seal for your next experiment.
- Mounting: Use a specialized ring stand and a padded funnel ring to support the weight of the funnel, especially when it is filled with 1000 mL or more of liquid.
| SKU | Material | Stopcock | Stopper Size | Height | Width |
|---|---|---|---|---|---|
| SF149-125 | Borosilicate Glass | PTFE (Teflon) | 22 | 260 mm - 270 mm | 64 mm - 68 mm |
| SF149-250 | Borosilicate Glass | PTFE (Teflon) | 22 | 310 mm - 325 mm | 83 mm - 88 mm |
| SF149-500 | Borosilicate Glass | PTFE (Teflon) | 27 | 370 mm - 385 mm | 104 mm - 108 mm |
| SF149-1000 | Borosilicate Glass | PTFE (Teflon) | 27 | 455 mm - 480 mm | 131 mm - 136 mm |
| SF149-2000 | Borosilicate Glass | PTFE (Teflon) | 38 | 510 mm - 530 mm | 167 mm - 173 mm |
| SF149-100 | Borosilicate Glass | PTFE (Teflon) | 22 | 255 mm - 265 mm | 62 mm - 66 mm |
| SF149-50 | Borosilicate Glass | PTFE (Teflon) | 19 | 220 mm - 230 mm | 50 mm - 55 mm |
| SKU | Includes | Certification |
|---|---|---|
| SF149-125 | PTFE stopcock, Plastic Stopper, Marking Spot, Large White Block Letters | ASTM E1096, ASTM standard E675 |
| SF149-250 | PTFE stopcock, Plastic Stopper, Marking Spot, Large White Block Letters | ASTM E1096, ASTM standard E675 |
| SF149-500 | PTFE stopcock, Plastic Stopper, Marking Spot, Large White Block Letters | ASTM E1096, ASTM standard E675 |
| SF149-1000 | PTFE stopcock, Plastic Stopper, Marking Spot, Large White Block Letters | ASTM E1096, ASTM standard E675 |
| SF149-2000 | PTFE stopcock, Plastic Stopper, Marking Spot, Large White Block Letters | ASTM E1096, ASTM standard E675 |
| SF149-100 | PTFE stopcock, Plastic Stopper, Marking Spot, Large White Block Letters | ASTM E1096, ASTM standard E675 |
| SF149-50 | PTFE stopcock, Plastic Stopper, Marking Spot, Large White Block Letters | ASTM E1096, ASTM standard E675 |
The Borosilicate Glass Separatory Funnels from United Scientific are indispensable for chemistry laboratories performing extractions and phase separations. These funnels feature the classic pear-shaped (Squibb) design, which is specifically engineered to provide a large surface area for mixing and a narrow bottom for the precise separation of immiscible liquids. Each unit is constructed from high-quality borosilicate glass, offering superior clarity for monitoring phase interfaces and exceptional resistance to chemical corrosion. To ensure a modern, maintenance-free workflow, these funnels come equipped with a PTFE (Teflon) stopcock, allowing for smooth, grease-free operation that prevents sample contamination.
Starting at $71.50
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